This extension has been replaced by Tab Statistics: https://addons.mozilla.org/en-US/firefox/addon/tab-count-button/

Install

• License: MIT License
• Weekly downloads: 0
• Average daily users: 1
• Rating: 5/5 of 1 ratings
• Created: 2017-10-24 18:12:45
• Last updated: 2018-07-06 17:35:05
• Homepage:
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/tabs-opened-button/
• API: {2b22f7cf-36bc-4fc8-807b-38afb0c5161b}